Shadow Jumping Spider
Phidippus adumbratus
The Shadow Jumping Spider (Phidippus adumbratus) is one of the rarer and more sought-after species in the jumping spider hobby. Known for its striking dark coloration, subtle beauty, and elusive nature, this species has become increasingly popular among enthusiasts looking to expand beyond the more commonly kept Regal and Bold Jumping Spiders.
Unlike species that immediately stand out through bright colors, Phidippus adumbratus captivates keepers through contrast, texture, and an unmistakable dark elegance that perfectly embodies the mysterious side of the jumping spider world.
Quick Facts
Scientific Name
Phidippus adumbratus
Common Name
Shadow Jumping Spider
Difficulty Level
Intermediate
Native Range
Found primarily throughout portions of:
Southwestern United States
Desert scrub habitats
Woodland edge environments
Semi-arid regions
Wild populations are significantly less encountered than many other Phidippus species.
Adult Size
Males
0.4–0.6 inches (10–15 mm)
Females
0.6–0.8 inches (15–20 mm)
Females are generally larger and more heavily built.
Lifespan
Males
1–2 years
Females
2–3 years
Why Keep a Shadow Jumper?
Phidippus adumbratus appeals to keepers who appreciate uncommon species and subtle beauty.
Enthusiasts value them for their:
Rare availability
Dark coloration
Unique appearance
Active hunting behavior
Collectible status among hobbyists
While Regals often attract attention through bright colors, Shadow Jumpers stand out through their dramatic contrast and elegant appearance.
Appearance
Overall Coloration
Shadow Jumpers are known for their darker tones compared to many other Phidippus species.
Common colors include:
Deep charcoal
Velvet black
Dark gray
Silver highlights
White patterning
Their coloration often gives them a striking silhouette against natural backgrounds.
Female Appearance
Females commonly display:
Dark gray to black bodies
Contrasting white markings
Dense body setae
Robust build
Many females possess a velvety appearance that becomes particularly noticeable under bright lighting.
Male Appearance
Males tend to be:
Smaller
More slender
Higher contrast
Darker overall
Adult males often develop striking facial features and prominent metallic chelicerae.
Chelicerae
Depending on the individual and lighting conditions, chelicerae may appear:
Emerald green
Teal
Blue-green
These metallic colors create a dramatic contrast against the spider's dark body.
Housing Requirements
Enclosure Size
Recommended adult enclosure:
4x4x6 inches
4x4x8 inches
Like most jumping spiders, vertical climbing space is preferred.
Ventilation
Excellent airflow is essential.
Proper ventilation helps prevent:
Mold
Stagnant air
Excess moisture buildup
Cross ventilation is highly recommended.
Climbing Opportunities
Provide:
Cork bark
Branches
Artificial foliage
Elevated hides
Textured surfaces
Shadow Jumpers are active explorers and benefit from complex climbing environments.
Temperature & Humidity
Temperature
Ideal Range:
72–82°F (22–28°C)
Stable temperatures produce the best long-term results.
Humidity
Ideal Range:
45–65%
Moderate humidity combined with strong ventilation is typically ideal.
Avoid consistently damp conditions.
Feeding
Shadow Jumpers are capable and enthusiastic hunters.
Spiderlings
Recommended feeders:
Melanogaster fruit flies
Hydei fruit flies
Juveniles
Recommended feeders:
Large fruit flies
Small bottle flies
Small roaches
Adults
Recommended feeders:
Bottle flies
House flies
Small roaches
Mealworms (occasionally)
Offer prey proportional to the spider's size.
Hydration
Provide hydration through:
Light misting
Water droplets
Regular moisture opportunities
Always avoid creating excessively wet enclosure conditions.
Behavior
Observant
Shadow Jumpers are highly visual predators that spend considerable time watching their surroundings.
Active Hunters
Like all jumping spiders, they stalk prey rather than relying on webs to capture food.
Curious Nature
Many individuals readily investigate environmental changes and movement outside their enclosure.
Retreat Builders
They create silk hammocks used for:
Sleeping
Resting
Molting
Shelter
Molting
Molting is a critical stage in development.
Common signs include:
Reduced appetite
Increased retreat use
Less activity
Thickened webbing
Do not disturb a spider during this process.
Patience is essential.
Handling
Many Shadow Jumpers tolerate gentle interaction when approached calmly.
If handling is desired:
Allow voluntary interaction
Move slowly
Avoid sudden movements
Respect the spider's boundaries
Not every individual will enjoy handling.
Breeding
Captive breeding of Phidippus adumbratus remains less common than species such as P. regius or P. audax.
Successful breeding requires:
Healthy mature adults
Proper conditioning
Careful introductions
Observation throughout the pairing process
Because the species is less commonly bred, successful breeding projects contribute significantly to captive availability.
Common Beginner Questions
"Why is my Shadow Jumper so dark?"
Their dark coloration is one of the species' defining characteristics and is completely normal.
"My spider spends a lot of time watching me."
Jumping spiders possess exceptional vision and frequently observe activity around them.
"Is this species aggressive?"
No.
Like other jumping spiders, they are generally curious and cautious rather than aggressive.
Is a Shadow Jumping Spider Right for You?
A Shadow Jumper may be an excellent choice if you're looking for:
✓ A less common species
✓ Dark fantasy aesthetics
✓ Strong visual contrast
✓ Active hunting behavior
✓ A unique addition to a growing collection
While beginners can certainly succeed with this species, it is often especially appreciated by keepers looking to expand beyond the hobby's most commonly available jumpers.
Tiny Coven Notes
At Tiny Coven Jumpers, Phidippus adumbratus represents everything we love about uncommon jumping spider species. Their dark coloration, mysterious appearance, and captivating personalities make them a standout addition to any collection and a perfect example of the diversity found within the genus Phidippus.
Difficulty: Intermediate
Temperature: 72–82°F
Humidity: 45–65%
Adult Size: Up to 0.8 inches
Special Trait: Dramatic Dark Coloration & Metallic Chelicerae
Tiny Coven Rating: One of the Hobby's Most Elegant and Underrated Species
Best For: Keepers seeking a rarer species with a striking dark appearance, fascinating behavior, and a truly unique presence in the collection.